Method and system for proactive heating-based crack prevention in 3D printing

A computer-implemented method for proactive heating-based crack preventing in three-dimensional printing, comprising:

• reading a three-dimensional model to be printed;
• determining whether the read three-dimensional model has closed-ended layers,
• each closed-ended layer comprising a starting point and an end point abutting the starting point;
• for each closed-ended layer, calculating start and end heating times and amount of heat requirement for materials of the closed-end layers;
• dispensing the materials of the closed-ended layers from a dispensing nozzle to accomplish a laying down of each of the closed-ended layers while moving the dispensing nozzle along circuits respectively corresponding to each of the closed-ended layers from the corresponding starting point to the corresponding end point;
• and
• controlling a heating of the closed-ended layers in accordance with the calculation during the laying down of each of the closed-ended layers,
• wherein the controlling of the heating is executed such that the starting point of each closed-ended layer is maintained in a liquid state by the heating from a time at which the materials of the closed-ended layers at the starting point are laid down until the materials of the closed-ended layers at the end point of that closed-ended layer are laid down.